balls.cpp: In function `void stergere(int)': balls.cpp:94: warning: comparison between signed and unsigned integer expressions balls.cpp:98: warning: comparison between signed and unsigned integer expressions balls.cpp:87: warning: `int j' might be used uninitialized in this function balls.cpp: In function `void solve(int, int)': balls.cpp:154: warning: unused variable `int N' balls.cpp: In function `int main()': balls.cpp:262: warning: comparison between signed and unsigned integer expressions balls.cpp:280: warning: comparison between signed and unsigned integer expressions /tmp/cccv3Tzh.o(.text+0x686): In function `main': : the `gets' function is dangerous and should not be used.